title: A 0.7-V 17.4- μ W 3-lead wireless ECG SoC.
abstract: This paper presents a fully integrated sub-1 V 3-lead wireless ECG System-on-Chip (SoC) for wireless body sensor network applications. The SoC includes a two-channel ECG front-end with a driven-right-leg circuit, an 8-bit SAR ADC, a custom-designed 16-bit microcontroller, two banks of 16 kb SRAM, and a MICS band transceiver. The microcontroller and SRAM blocks are able to operate at sub-/near-threshold regime for the best energy consumption. The proposed SoC has been implemented in a standard 0.13- μ m CMOS process. Measurement results show the microcontroller consumes only 2.62 pJ per instruction at 0.35 V . Both microcontroller and memory blocks are functional down to 0.25 V. The entire SoC is capable of working at single 0.7-V supply. At the best case, it consumes 17.4 μ W in heart rate detection mode and 74.8 μW in raw data acquisition mode under sampling rate of 500 Hz. This makes it one of the best ECG SoCs among state-of-the-art biomedical chips.
authors.forename: Mahmood
authors.initials: M
authors.lastname: Khayatzadeh
authors.forename: Xiaoyang
authors.initials: X
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Tan
authors.forename: Wen-Sin
authors.initials: WS
authors.lastname: Liew
authors.forename: Yong
authors.initials: Y
authors.lastname: Lian
mesh_terms: D020811:Biomedical Technology / Q000295:instrumentation*; D011211:Electric Power Supplies; D004562:Electrocardiography / Q000295:instrumentation*; D004867:Equipment Design / Q000295:instrumentation; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D013686:Telemetry / Q000295:instrumentation*; D059015:Wireless Technology / Q000295:instrumentation*